A high-carbon martensitic stainless steel strengthened by cobalt and molybdenum additions, with controlled vanadium and aluminum content to refine carbide structure and support precipitation hardening. This composition variant represents an advanced martensitic stainless optimized for applications demanding both high strength and corrosion resistance, bridging the capabilities of conventional 15Cr martensitic grades (like 420) and premium tool steel performance. Typical applications include high-performance cutting tools, aerospace fasteners, and industrial pump impellers where corrosion resistance cannot be sacrificed for strength—making it a preferred alternative to austenitic stainless in load-bearing roles or to unalloyed martensitic stainless in corrosive environments.
Compliance & Regulations
| Property | Value | Unit | Conditions | Source | |
|---|---|---|---|---|---|
Elongation at Break(εf) | 18.50 | - | — | ||
Ultimate Tensile Strength(σUTS) | 1.746 | GPa | — | ||
Yield Strength (0.2% offset)(σy) | 1.342 | GPa | — |